Mean (SD) external trabecular membrane (ETM) cell density and ETM thickness according to race, previous argon laser trabeculoplasty (ALT), preoperative use of fluorometholone (FI), and peroperative application of mitomycin (MMC)
| Mean (SD ETM thickness (μm)* | Mean relative ETM cell density† (area 50 × 50 μm) | |
|---|---|---|
| *Mean count of 3 sections in different areas of the ETM specimens. | ||
| †Mean count in 5 different areas and planes. | ||
| ‡p=0.02. | ||
| Normal ETM (n=8) | 34.4 (10.4) | 167.5 (24.9) |
| Glaucoma patients (n=60) | 29.5 (7.6) | 37.3 (9.7) |
| Black patients (n=6) | 34.3 (7.1) | 25.5 (16.6) |
| White patients (n=54) | 28.9 (7.1) | 39.4 (30.4) |
| Previous ALT (n=10) | 29.1 (5.9) | 22.6 (16.1) |
| No previous ALT (n=50) | 29.5 (7.6) | 39.6 (30.7) |
| Preoperative FI (n=32) | 30.8 (6.9) | 26.3 (16.9) |
| No preoperative FI (n=28) | 28.0 (7.4) | 46.4 (34.6)‡ |
| Peroperative MMC (n=12) | 29.2 (7.6) | 37.2 (28.8) |
| No peroperative MMC (n=48) | 29.8 (7.5) | 37.8 (32.2) |